What is the sales tax in zip code 45403? - The sales tax in zip code 45403 in Dayton, Ohio is 7.5% as of 2025. Use the 45403 sales tax rate calculator to calculate the sales tax for any purchase in 45403.
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Below is a list of the state sales tax, city sales tax, and county tax rate for .
| County | State | City | Zip Code | State Tax | City Tax | County Tax | Total Tax |
|---|---|---|---|---|---|---|---|
| Montgomery | Ohio | Dayton | 45403 | 5.75% | 0% | 1.75% | 7.5% |